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• Nginx RTMP/HLS - stream to ffmpeg and output HLS

  20 novembre 2018, par kanazaca

  At this point my solution is working but only as RTMP, i can watch perfectly my stream using the URL :

  rtmp://X.X.X.X:1935/show/name

  But the problem is that my LG Smart Tv which uses WebOS don’t support RTMP and i would really like to play my stream there. The only solution that i can see right now is to use HLS. With HLS all works fine too, but i need to execute my ffmpeg command before open the HLS stream in TV, otherwise it will not create the files necessary to display the stream on my TV.

  So my goal is to serve a stream as HLS without having to trigger the RTMP endpoint or the FFMPEG manually.

  I’m really struggling with this, waste 3 days trying to make it work :(

  http 
  
  {
  
  location /hls 
  
  {
  
      # Disable cache
  
      add_header Cache-Control no-cache;
  
  
  
      # CORS setup
  
      add_header 'Access-Control-Allow-Origin' '*' always;
  
      add_header 'Access-Control-Expose-Headers' 'Content-Length';
  
  
  
      # allow CORS preflight requests
  
      if ($request_method = 'OPTIONS') {
  
          add_header 'Access-Control-Allow-Origin' '*';
  
          add_header 'Access-Control-Max-Age' 1728000;
  
          add_header 'Content-Type' 'text/plain charset=UTF-8';
  
          add_header 'Content-Length' 0;
  
          return 204;
  
      }
  
  
  
      types {
  
          application/vnd.apple.mpegurl m3u8;
  
          video/mp2t ts;
  
      }
  
  
  
      root /mnt/;
  
      }
  
  }
  
  
  
  }
  
  rtmp {
  
  server {
  
      listen 1935;
  
  
  
      chunk_size 4000;
  
      buflen 5s;
  
  
  
      application show {
  
          live on;
  
  
  
      exec_pull ffmpeg -re -i http://stream-coming.com/$name.ts -c:v libx264 -preset faster -pix_fmt yuv420p -c:a aac -f flv rtmp://localhost/show/$name;
  
  
  
          # Turn on HLS
  
          hls on;
  
          hls_path /mnt/hls/;
  
          hls_fragment 3;
  
          hls_playlist_length 60;
  
          # disable consuming the stream from nginx as rtmp
  
          deny play all;
  
      }
  
  }

  }

  Thanks for your time ;)

• What is the best way to take care of noise in ffmpeg ?

  4 février 2021, par laboy

  I have an old piece of footage that while being high quality is a bit worn and has a lot of film grain and those lines that show up on old film.

  


• How to extract subtitle from usm file

  14 janvier 2024, par Marcin Nancin

  I would like to extract subtitle.txt from usm file, I tried use ffmpeg but it show unspuported file. Hexedit show that file has txt extension. Ffmpeg support demux cri usm file, but I cant figure out how to do it.

  


    Duration: 00:03:10.00, start: 0.000000, bitrate: 12383 kb/s
  Stream #0:0: Video: mpeg1video, yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], 104857 kb/s, 30 fps, 30 tbr, 30 tbn
      Side data:
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 4554752 vbv_delay: N/A
  Stream #0:1: Audio: none, 44100 Hz, 2 channels
  Stream #0:2: Audio: none, 44100 Hz, 2 channels
  Stream #0:3: Audio: none, 44100 Hz, 2 channels
  Stream #0:4: Audio: none, 44100 Hz, 2 channels
  Stream #0:5: Audio: none, 44100 Hz, 2 channels
  Stream #0:6: Audio: none, 44100 Hz, 2 channels
  Stream #0:7: Audio: none, 44100 Hz, 2 channels
  Stream #0:8: Audio: none, 44100 Hz, 2 channels
  Stream #0:9: Audio: none, 44100 Hz, 2 channels
  Stream #0:10: Audio: none, 44100 Hz, 2 channels
  Stream #0:11: Subtitle: none
At least one output file must be specified


  


  I tried to unpack the file but I still get an error that the codec was not detected.